| 摘要 |
A transducer for use in an ultrasonic gas flow meter includes a housing having an open end and a closed end with a side wall extending therebetween. The closed end of the housing is shaped to receive and transmit sound waves during operation of the transducer. A resonator is positioned in the housing with a transmitting and receiving end facing the closed end of the housing. A thickness of the side wall of the housing at the closed end is less than at a position further toward the open end in order to divert and diffuse spurious vibrations that might otherwise occur near the resonating frequency of the transducer. Generally, such vibration diversion and diffusion is best achieved when the thickness of the side wall housing gradually decreases toward the closed end of the housing. Further, an outer diameter of the housing side wall may gradually decrease toward the closed end of the housing to improving ringing and bandwidth properties. A method of manufacturing a transducer for operation within a predetermined frequency range is also provided.
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